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CODE:km-099 Product Name:(E)-Ethyl 4-(3,4-dimethoxyphenyl)-4-oxo-2-butenoate (VAC) CAS No.80937-23-1 MF: C14H16O5 Structure: M.P.: 87.0~91.0℃ (melting range 2℃) Assay:98.5%min. (HPLC) Application: Used as pharmacy intermediate